package com.dyc.caradvertisting.widget.utils;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;

import com.njh.tools.common.DensityUtil;


/**
 * Created by Administrator on 2016/1/6.
 */
public class DividerItemWidthDecoration extends RecyclerView.ItemDecoration {

    private static final int[] ATTRS = new int[]{
            android.R.attr.listDivider
    };

    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;

    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;


    private int mOrientation;

    Context context;

    float dividerWidth;

    Paint paint;
    int dividerColor;

    public DividerItemWidthDecoration(Context context, int orientation, float dividerWidth, int dividerColor) {
        setOrientation(orientation);
        this.context = context;
        this.dividerWidth = dividerWidth;
        this.dividerColor = dividerColor;
        paint = new Paint();
        paint.setColor(context.getResources().getColor(dividerColor));
    }

    public void setOrientation(int orientation) {
        if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
            throw new IllegalArgumentException("invalid orientation");
        }
        mOrientation = orientation;
    }

    @Override
    public void onDraw(Canvas c, RecyclerView parent) {
        if (mOrientation == VERTICAL_LIST) {
            drawVertical(c, parent);
        } else {
            drawHorizontal(c, parent);
        }

    }

//    @Override
//    public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
//        super.onDrawOver(c, parent, state);
//        if (mOrientation == VERTICAL_LIST) {
//            drawVertical(c, parent);
//        } else {
//            drawHorizontal(c, parent);
//        }
//    }

    public void drawVertical(Canvas c, RecyclerView parent) {
        final int left = parent.getPaddingLeft();
        final int right = parent.getWidth() - parent.getPaddingRight();

        final int childCount = parent.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = parent.getChildAt(i);
            RecyclerView v = new RecyclerView(parent.getContext());
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                    .getLayoutParams();
            final int top = child.getBottom() + params.bottomMargin;
            final int bottom = top + DensityUtil.dip2px(context, dividerWidth);
            c.drawRect(left, top, right, bottom, paint);
        }
    }

    public void drawHorizontal(Canvas c, RecyclerView parent) {
        final int top = parent.getPaddingTop();
        final int bottom = parent.getHeight() - parent.getPaddingBottom();

        final int childCount = parent.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = parent.getChildAt(i);
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                    .getLayoutParams();
            final int left = child.getRight() + params.rightMargin;
            final int right = left + DensityUtil.dip2px(context, dividerWidth);
            c.drawRect(left, top, right, bottom, paint);
        }
    }

    @Override
    public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) {
        if (mOrientation == VERTICAL_LIST) {
            outRect.set(0, 0, 0, DensityUtil.dip2px(context, dividerWidth));
        } else {
            outRect.set(0, 0, DensityUtil.dip2px(context, dividerWidth), 0);
        }
    }
//    @Override
//    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
//        super.getItemOffsets(outRect, view, parent, state);
//    }
}